package io;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyDemo2 {
    public static void main(String[] args) throws IOException {
        FileOutputStream fos = new FileOutputStream("image_cp2.png");
        FileInputStream fis = new FileInputStream("image.png");

        int len;

        byte[] data = new byte[1024*10];
        long star = System.currentTimeMillis();
        while ((len = fis.read(data))!=-1){
            fos.write(data,0,len);

        }
        long end = System.currentTimeMillis();
        System.out.println("复制完毕,耗时:"+(end-star)+"毫秒");
        fis.close();
        fos.close();




    }
}
